Extension-table.



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Patented Feb EXTENSION TABLE.

APPLICATION FILED JULY 31. 1906.

' GRUENDER.

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APPLICATION FILED JULY 31, 1906.

Patented Feb. 15,1910.

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VIILVIIIIIIIIIII INVENTQR. JOSEPH J. GRUENDER.

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EXTENSION-TABLE.

Specification of Letters Patent.

Application filed July 31, 1906.

. Patented Feb. 15, 1910.

Serial No. 328,614.

To all whom it may concern:

Be it known that I, J osnrrr J. GRUENDER, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Extension- Tables, of which the following is a specification, containing a full, clear, and exact description, reference being had to the acconr panying drawings, forming a part hereof.

My invention relates generally to improvements in extension tables, and more particularly to the telescoping slides arranged beneath the table top by means of which the ends of the table are extended to receive additional leaves when the table is enlarged.

My invention consists in certain novel features of construction and arrangement of parts, which will be hereinafter more fully set forth, pointed out in the claim, and illustrated in the accompanying drawings, in which Figure 1 is a longitudinal section taken through the top of the table, and showing one of my telescoping slides in side elevation; Fig. 2 is a plan view of my improved telscoping slides as applied for use; Fig. 3 is an enlarged transverse section taken through one of the slides, and showing the three members thereof in section; Fig. 4: is a transverse section analogousto Fig. 3, and showing a cross brace secured to the center telescoping member; Fig. 5 is a plan view of the under side of one of the telescoping slides, the same being in closed position; Fig. 6 is a horizontal section, and showing stops formed on the ends of the sliding members for limiting their movement; Fig. 7 is a perspective view of one of the sliding members which is attached to the under side of the table top.

Referring by numerals to the accompanying drawings l1 designate the end pieces of the table top to which the legs 2 are fixed in the usual manner. The outer members 3 of the telescoping slides are constructed of suitable sheet metal in tubular form, and provided throughout their lengths with a plurality of ribs 4:; and formed integral with the upper ends .of said tubular members 3 are the vertically disposed flanges 5, provided with the longitudinally extending ribs 6, and integral with the top edges of the rear portions of the flanges 5 are the horizontally arranged plates 7, which are fixed by means of screws or in any suitable manner to the under side of one of the parts 1 of the table top. Integral with and projecting inwardly from the opposite end of the flanges 5 are lugs 8. Arranged to telescope within the members 3 are the central tubular members 9, provided throughout their lengths with the ribs 10, which coincide with the ribs 1; and integral with the upper ends of the cylindrical members 9 are the vertically disposed flanges 11, in which are formed the longitudinally extending ribs 12, which coincide with and ride against the inner faces of the ribs 6. Integral with the centers of the two inner flanges 11, and extending horizontally toward one another are the plates 13, to which is fixed in any suitable manner a transverse timber 14, to the center of which is fixed the center leg 16 of the table. Formed integral with the ends of the flanges 11, which slide between the flanges 5, are lugs 15, which perform the function of stops, and engage against the lugs 8 to limit the outward telescopic movement of the tubular members 3 and 9. Formed integral with the opposite ends of the flanges 11 are the inwardly projecting lugs 16. Arranged to telescope within the tubular member 9 is a tubular member 17 provided with the longitudinally extending ribs 18, which coincide and bear against the ribs 10; and integral with the tops of these tubular members 17 are the vertically disposed flanges 19, in which are formed the longitudinally extending ribs 20, which bear against the ribs 12. Integral with the outer ends of the flanges 19 are the horizontally disposed plates or flanges 21, which are fixed in any suitable manner to the under side of the part 1 of the table top opposite from the part on which the flanges 7 are fixed. Integral with the ends of the flanges 19 which slide between the flanges 11 are the outwardly projecting lugs 22, which perform the function of stops and engage against the lugs 16 to limit the outward telescopic movement of the tubular members 9 and 17.

I prefer to construct the telescoping members with the longitudinally extending ribs which bear against one another when the members move longitudinally, and which materially reduce the friction of said telescoping parts while in operation, although in some instances these ribs may be dispensed with. The telescoping members, owing to their peculiar shape, are very strong, and operate freely under all conditions, and by the arrangement of the lugs 8, 15, 16 and 22, said members are prevented from disengaging with one another during their operation.

My improved telescoping slides areapplicable for all forms of extension tables, are easily positioned for use, can be cheaply manufactured, and operate easily, and with little friction.

I claim:-

In an extension table, a table top constructed of end pieces movable relative to each other, a tubular sheet metal slide having integral vertically disposed flanges and integral horizontally arranged plates carried by each of the end pieces of the table top, a tubular member telescopically connectin said slides and provided with vertically disposed flanges arranged to be embraced by the vertical flanges of the slides, outwardly projecting ribs formed from the body portions of each of the vertical flanges and from each of the body portions of the.

telescoping members and stops carried by the telescoping members to limit their movements relative to each other, said ribs arranged in such relation to each other that their outer faces will engage the inner faces of the adjoining rib, thereby materially reducing the friction between the telescoping members.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

JOSEPH J. GRUENDER.

lVitnesses M. P. SMITH, E. L. WALLACE. 

